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High loading cotton cellulose-based aerogel self-standing electrode for Li-S batteries.
- Source :
-
Science Bulletin . May2020, Vol. 65 Issue 10, p803-811. 9p. - Publication Year :
- 2020
-
Abstract
- Lithium-sulfur (Li-S) batteries have attracted considerable attention due to their high energy density (2600 Wh kg−1). However, its commercialization is hindered seriously by the low loading and utilization rate of sulfur cathodes. Herein, we designed the cellulose-based graphene carbon composite aerogel (CCA) self-standing electrode to enhance the performance of Li-S batteries. The CCA contributes to the mass loading and utilization efficiency of sulfur, because of its unique physical structure: low density (0.018 g cm−3), large specific surface area (657.85 m2 g−1), high porosity (96%), and remarkable electrolyte adsorption (42.25 times). Compared to Al (about 49%), the CCA displayed excellent sulfur use efficiency (86%) and could reach to high area capacity of 8.60 mAh cm−2 with 9.11 mg S loading. Meanwhile, the CCA exhibits the excellent potential for pulse sensing applications due to its flexibility and superior sensitivity to electrical response signals. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20959273
- Volume :
- 65
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Science Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 142979975
- Full Text :
- https://doi.org/10.1016/j.scib.2020.01.021